This old-timer comes with a label from W.F. Ferrier of Canada, dated to the last part of the 19th. century. Frieslebenite, a rare sulfo-salt of silver, lead, and antimony, can be found on this matrix specimen associated with drusy quartz, in euhedral crystals as large as .5 cm across. It is a gray-black color with evident luster. This is a large, rich, and very rare example of the species from its most famous historic locale!